B3265

DTC B3265

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.

DTC Descriptors
DTC B3265 01
- Hatch Release Output Circuit Short to Battery

DTC B3265 06
- Hatch Release Output Circuit Short to Ground or Open

Diagnostic Fault Information





Circuit/System Description

The body control module (BCM) provides voltage to the liftgate release relay control circuit thus energizing the L/GATE RELSE relay which provides voltage to the liftgate latch releasing the liftgate.

Conditions for Running the DTC

The system voltage is 9-16 volts.

Conditions for Setting the DTC

B3265 01

The BCM detects a short to battery in the liftgate release relay control circuit.

B3265 06

The BCM detects an open or short to ground in the liftgate release relay control circuit.

Action Taken When the DTC Sets

The liftgate latch will malfunction.

Conditions for Clearing the DTC

* The DTC will be current for as long as the fault is present.
* When the fault is no longer present, the DTC will be a history DTC.
* A history DTC will clear after 50 ignition cycles.

Diagnostic Aids

Before testing can be performed the liftgate must be opened. Refer to Opening the Liftgate Without Electrical Power (Procedures) for the appropriate procedure.

Reference Information
Schematic Reference

Release Systems Schematics (Release Systems Schematics)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Rear Hatch/Gate Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

Command all the doors to UNLOCK by using the door lock switch, command the liftgate door latch to release by pressing the liftgate release switch. The liftgate door latch should release the liftgate.

Circuit/System Testing

1. Ignition OFF, disconnect the L/GATE RELSE relay.
2. Connect a test lamp between the control circuit terminal 86 and B+.
3. Command the liftgate release ON and OFF by pressing and releasing the liftgate release switch. The test lamp should turn ON and OFF when changing between the commanded states.

• If the test lamp is always OFF, test the control circuit for an open/high resistance.

• If the test lamp is always ON, test the control circuit for a short to ground.

4. Connect a test lamp between the control circuit terminal 85 and ground.
5. Command the liftgate release actuator ON and OFF by pressing and releasing the liftgate release switch. The test lamp should turn ON and OFF while changing between the commanded states.

• If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the BCM.
• If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.

6. If all circuits test normal, test or replace the L/GATE RELSE relay.

Component Testing

Relay Test
1. Ignition OFF, disconnect the L/GATE RELSE relay.
2. Test for 60-180 ohms between terminals 85 and 86.

• If not within the specified range, replace the relay.

3. Test for infinite resistance between the following terminals:

* 30 and 86
* 30 and 87
* 30 and 85
* 85 and 87

• If not the specified value, replace the relay.

4. Install a 25-amp fused jumper wire between relay terminal 85 and 12 volts. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 ohms between terminals 30 and 87.

• If greater than the specified range, replace the relay.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Relay Replacement (Attached to Wire Harness) (Relay Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (Relay Replacement (Within an Electrical Center))
* Control Module References (Programming and Relearning) for BCM replacement, setup and programming